Submitted for Publication: May 17, 2013; final revision received July 17, 2013; accepted July 22, 2013.
Published Online: December 12, 2013. doi:10.1001/jamaophthalmol.2013.6222.
Study concept and design: Tourtas, Schlomberg, Wessel, Bachmann, Kruse.
Acquisition of data: Tourtas, Schlomberg.
Analysis and interpretation of data: Tourtas, Schlomberg, Schlötzer-Schrehardt, Kruse.
Drafting of the manuscript: Tourtas, Schlomberg, Bachmann.
Critical revision of the manuscript for important intellectual content: Tourtas, Wessel, Bachmann, Schlötzer-Schrehardt.
Statistical analysis: Tourtas, Schlomberg.
Administrative, technical, and material support: Tourtas.
Study supervision: Bachmann, Kruse.
Conflict of Interest Disclosures: None reported.
Previous Presentation: This paper was presented in part as a poster at the Annual Meeting of the Association for Research in Vision and Ophthalmology; May 6, 2012; Ft Lauderdale, Florida.